CAJ | 학술논문

基于矸石充填采煤控制采动裂隙高度发育的原理，采用FLAC3D数值模拟软件研究了矸石充填采煤导水裂隙带发育高度的变化规律，利用统计分析软件SPSS建立了基于采高与充实率的多元线性回归矸石充填采煤导水裂隙带发育高度计算模型，进而提出了含水层下矸石充填提高开采上限的确定方法。结果表明：在采高小于3.5 m，充实率达到85%条件下，开采上限可由-300 m提高至-255 m，多回采煤炭资源182.6万t。经五沟煤矿矸石充填采煤工作面试验，采用钻孔冲洗液漏失量监测法，得到实测导水裂隙带发育高度仅为10 m，与理论计算结果相吻合。
기우안석충전채매공제채동렬극고도발육적원리，채용FLAC3D수치모의연건연구료안석충전채매도수렬극대발육고도적변화규률，이용통계분석연건SPSS건립료기우채고여충실솔적다원선성회귀안석충전채매도수렬극대발육고도계산모형，진이제출료함수층하안석충전제고개채상한적학정방법。결과표명：재채고소우3.5 m，충실솔체도85%조건하，개채상한가유-300 m제고지-255 m，다회채매탄자원182.6만t。경오구매광안석충전채매공작면시험，채용찬공충세액루실량감측법，득도실측도수렬극대발육고도부위10 m，여이론계산결과상문합。
Based on the theory of controlling height of mining-induced fracture by gangue backfill mining, the software FLAC3D is used to study the change law of height of water flowing fractured zone. Calculation model of height of water flowing fractured zone between mining height and compaction ra-tio is gained by the means of multiple linear regression. The determination method of mining upper limit under aquifer is proposed. The results show that the mining upper limit can be extended from-300 m to-255 m and 1.826 million tons coal resources can be recovered on the condition of mining height less than 3.5 m and compaction ratio up to 85%. Through the test of gangue backfill mining in Wugou coal mine, the height of water flowing fractured zone is just 10 m by the leakage volume of drilling fluid. The monitoring results are quite consistent with the theoretical calculation.